I doubt there's a noticeable difference between a switch and a series of if /else if statements.
In AS 3.0 bytecode, though, switches and equivalent conditionals are not necessarily compiled into the same bytecode. In fact, there's a lookupswitch instruction (opcode 0x1b). Of course, any switch can be implemented as a series of if / else if statements, but that's up to the compiler. From my (limited) experience, the Flash IDE always uses a switch bytecode whenever it finds a switch construct in Actionscript code. I don't know how it affects runtime performance, but my guess is that it doesn't have much impact. And, thinking about it, maybe that opcode exists because it's an optimized way to compile / execute a series of related conditions. Cheers Juan Pablo Califano 2008/6/25, eric e. dolecki <[EMAIL PROTECTED]>: > > Switch/case is a bit quicker. > > On Wed, Jun 25, 2008 at 10:12 AM, Allandt Bik-Elliott (Receptacle) < > [EMAIL PROTECTED]> wrote: > > > Hi guys > > > > quick question that came up in a conversation I had the other day - are > > switch statements more or less efficient than a series of if...else > > statements in either AS2 or AS3? > > > > I'd always thought that the most efficient was the switch > > > > al.z > > > > _______________________________________________ > > Flashcoders mailing list > > [email protected] > > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
